Schlumberger Technology Corporation

Herve Chapellat

Laurent Jammes

Hossein Sazegar

A sleep mask assembly includes a sleep mask that is wearable on a user's face such that the sleep mask covers the user's eyes. The sleep mask has a face portion and a flap portion. The face portion rests against the user's face when the sleep mask is worn. The flap portion is positionable in a deployed position has the flap portion resting against the user's forehead to facilitate the user to comfortably rest their forehead against a support object when the user is sleeping in a sitting position. The flap portion is positionable in a stored position having the flap portion resting against the face portion. A pair of elastomeric straps is each coupled to the sleep mask thereby facilitating the pair of elastomeric straps to be worn around the user's head for retaining the sleep mask on the user's face.

Sleep mask assembly

A method of determining a physical parameter of geological formations having a borehole passing therethrough by using a sonde lowered down the borehole at the end of a cable and including a source of gamma radiation, a very near detector, a near detector, and a far detector, the method being characterized in that: for each energy window, a model is created characteristic of the response of each detector; a 'low resolution' value of the looked-for parameter is determined which, when applied to the model, gives rise to a theoretical measurement that is substantially equal to the 'low resolution' real measurement obtained by combining the measurements from all three detectors; the measurements from the two detectors nearest the source are combined to constitute a 'high resolution' real measurement; and a 'high resolution' value of the parameter is determined which, when applied to the model, gives rise to a theoretical value that is substantially equal to the 'high resolution' real measurement, the determination being performed on the basis of the 'high resolution' real measurement and of the 'low resolution' value of the parameter.

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Herve Chapellat